Rotary joint



Sept. 7; 1943.

L. D. GOFF ETAL ROTARY JOINT Filed Jan. 16, 1941 LEUNARD DEUPP & RQLLU UMUNRUE @W Y m Patented Sept. 7, 1943 ROTARY JOINT Leonard 1). G03 andRollo 0. Monroe, Three Rivers, Mich., assignors to The JohnsonCorporatioh. Three Rivers, Mich, a corporation of Michigan ApplicationJanuary 16, 1941, Serial No. 374,671

2 Claims. (Cl. 285-96.3)

The present invention relates to improvements in rotary pressure joints,being an improvement over the joint construction shown in United StatesPatent No. 1,929,635, granted October 10,

rangement prevents relative rotation between the plate 28 and the casingIII. while permitting the springs 32. While a single'large coil springmay be used or its equivalent, we prefer to use a plurality of smallsprings 32 so that breakage of a spring will not result in theinterruption of the 1933, to Leonard D. Gofi. 5 operation of the joint.

One of the objects of the present invention is I As. illustrated, thenipple I2 is of one piece to reduce the cost of maintenance of joints ofconstruction with spaced shoulder portions 34 the aforesaid type inservice by designing the and 36 providing convex bearing surfaces in theconstruction to make it more readily re-machinform of sphericalsegments. Sealing rings 38 able and to enable the use of a renewablewear having flat bearing surfaces 40 and concave bearplate at the nippleend of the joint. ing surfaces 42 in the form of spherical segmentsAnother object is to reduce the cost of proco-act with the convexsurfaces of the shoulders duction of joints of the aforesaid ty by imli- 34 and 36 and the flat vertical surfaces 2i and tying theconstruction of. the rotated nipple. M in the same manner as describedin the afore- A further object is to provide a thrust late said patent.The tension of the springs 32 keeps actuated by plurality of springmembers in a the sealing rings 38in firm contact with the bearrotaryjoint of the type described to lessen the ing surfaces of the nipple l2and the plates 18 possibility oi failure of the joint in service due toand 28. Betweenthe shoulders 34 and 36 in the spring destruction. nippleI! are a plurality of openings 43.

These and other objectsand advantages resid- 20 From the foregoingspecification it will be aping in the arrangement, combination and con-.parent that there is provided a rotary joint prostruction of parts willbecome apparent from a viding a fluid p s fldm the connectorconsideration of the following detailed descripthrough the openings 43and the nip le l2 and tion of the illustrated-form of the invention andthat the sealing pressure is provided by the from the annexed claims. 25springs 32. o I

In the drawing, Having thus described-our invention what we Fig. 1 is alongitudinal cross-sectional view of desire to secure by Letters Patentand claim is: the rotaryjoint embodying the present inven- 1. In a jointof the character described. the ion, and combination with a stationarycasing having op- Flg. 2 is an end view of Fig. l as viewed from posedbearing ring seats, and bearing rings slidthe left. ably seated thereonhaving concave bearing sur- In the illustrated form or the invention,the faces in the form of spherical segments, a onecasing I0 isstationary while thetubular conpiece rotable tubular member extendinginto necting member or nipple i2 is threaded at It said'casing andhaving spaced shoulders provided for connection to a rotatable member.such as with convex bearing surfaces in the'form of the steam drum of apaper drier. The ends of spherical segments co-acting with said concavethe casing it are closed by a plate is at one bearing surfaces, one ofsaid opposed bearing end and a bearing ring seat plate l8 apertured ringseats being movable toward the other and at 20 to receive the nipple l2.Screws 22 removspring means for urg n said movable seat toward ablysupport the plate is permitting the same to 40 said opposed seat to holdsaid bearing ring bebe renewed without scrapping the entire casing tweensaid Seats and Said ar mem as in the case of the construction shown inthe 2. In a rotary joint of the class described, a aforesaid patent. Itsremovability also facillfixed bearing ring seat, an opposed axialmovable tates re-machining of the vertical fiat seat 24 bea i ing t. arta able pp d sp e b which in service might become worn. The castweensaid seats, sealing rings disposed between ing I0 is provided in oneside thereof with a fluid said seats and saidnippie, means for urgingsaid connector 25. movable seat toward said nipple, a main body Theplate I6 is provided with a squared sleeve portion to which said firstseat is fixedly secured, 26 with which the thrust plate 28, having asimiand means carried by the said main body for larly shaped opening 30,telescopes. This arguiding and holding said movable seat againstrotation.

LEONARD D. GOFF.

ROLLO O. MONRDE.

